Perhaps you should try some spelling variations:
"improving food performance metrics." » "improving food performance measures.", "improving good performance metrics.", "improving fund performance metrics.", "improving bond performance metrics."
"improving data performance series." » "improving data performance studies.", "improving data performance size.", "improving data performances series.", "improving drama performance series.", "improving cta performance series.", "improving air performance series.", "improving health performance series."

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: (("improving data performance series.") or ("improving food performance metrics."))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (("improving data performance series.") OR ("improving food performance metrics.")).
• Removing quotes may allow a broader search: (( improving data performance series. ) or ( improving food performance metrics. )).
• Adding a wildcard symbol may retrieve word variants: (("improving data performance series.") or ("improving food performance metrics."))*.